13.
The most abundantly found gas is atmosphere is
Answer : A. nitrogen
14.
which methoed is used in Detection of Nitrogen with SFE
Answer : B. Lassaigne's method
15.
Human bone does not contain
Answer : A. Oxygen
16.
Natural petroleum is a liquid mixture of paraffin hydrocarbons
Answer : D. C5 to C15
17.
The carbon black is obtained from
Answer : D. Methane
18.
Trimethyl benzene is called
Answer : D. Mesitylene